When sharding databases, independent auto‑increment IDs can collide, causing data integrity issues; this article explains why the conflict occurs and walks through five practical solutions—including UUID, custom auto‑increment steps, segment mode, Snowflake, and Meituan Leaf—detailing their trade‑offs, performance, and implementation steps.
The article explains why traditional auto‑increment primary keys are unsuitable for distributed systems, outlines the business requirements for a distributed ID (global uniqueness, trend and monotonic increase, security), and reviews several generation approaches such as UUID, database auto‑increment, segment mode, Redis, Snowflake, Baidu UidGenerator, Meituan Leaf and Didi TinyID, including their advantages and drawbacks.
This article explains the segment‑mode ID generation strategy, analyzes its pros and cons, describes suitable application scenarios, and provides a complete Java implementation with database schema, supporting classes, and a multithreaded test case for high‑concurrency environments.
This article explains why distributed systems need special ID generation, outlines the key requirements such as global uniqueness and monotonicity, and compares various solutions including UUID, database auto‑increment, segment mode, Redis, Snowflake, Baidu UidGenerator, Meituan Leaf, and Didi TinyID.
This guide explains how the Leaf distributed ID service, built with Spring Boot, supports segment and Snowflake modes, details its configuration, deployment steps, code examples, and operational considerations for high‑throughput backend systems.
This article explains the need for globally unique, high‑performance, and easy‑to‑integrate distributed IDs, outlines their essential characteristics, and compares nine common generation approaches—including UUID, database auto‑increment, segment mode, Redis, Snowflake, Baidu uid‑generator, Meituan Leaf, and Didi TinyID—detailing each method’s advantages and drawbacks.
This article explains why distributed IDs are essential, outlines the key requirements for a global unique identifier, and compares nine popular generation strategies—including UUID, database auto‑increment, segment mode, Redis, Snowflake, TinyID, Baidu uid‑generator, and Meituan Leaf—detailing their advantages, drawbacks, and sample implementations.
